The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Sep. 30, 2022
Ningde Amperex Technology Limited, Ningde, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde, CN;
Abstract
A negative electrode material includes a composite of a silicon-based material (), a polymer (), and carbon nanotubes (), where the polymer () contains a first group and a second group, the first group is chemically bonded to the carbon nanotubes (), and the second group is chemically bonded to the silicon-based material (). Both the carbon nanotubes () and the polymer () containing two groups are applied to surfaces of particles of the silicon-based material (). The two groups of the polymer () are chemically bonded to the silicon-based material () and the carbon nanotubes () respectively, so that bonding force between the silicon-based material () and the carbon nanotubes () is enhanced and a uniform carbon nanotube () coating layer is formed. This can significantly improve conductive performance of the silicon-based material (), thereby improving cycling performance and rate performance of an electrochemical apparatus.